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- W3048348982 abstract "Abstract Geophysical and geochemical data indicate there is abundant fluid expulsion in the Nootka fault zone (NFZ) between the Juan de Fuca and Explorer plates and the Nootka continental slope. Here we combine observations from >20 years of investigations to demonstrate the nature of fluid‐flow along the NFZ, which is the seismically most active region off Vancouver Island. Seismicity reaching down to the upper mantle is linked to near‐seafloor manifestation of fluid flow through a network of faults. Along the two main fault traces, seismic reflection data imaged bright spots 100–300 m below seafloor that lie above changes in basement topography. The bright spots are conformable to sediment layering, show opposite‐to‐seafloor reflection polarity, and are associated with frequency reduction and velocity push‐down indicating the presence of gas in the sediments. Two seafloor mounds ~15 km seaward of the Nootka slope are underlain by deep, nonconformable high‐amplitude reflective zones. Measurements in the water column above one mound revealed a plume of warm water, and bottom‐video observations imaged hydrothermal vent system biota. Pore fluids from a core at this mound contain predominately microbial methane (C 1 ) with a high proportion of ethane (C 2 ) yielding C 1 /C 2 ratios <500 indicating a possible slight contribution from a deep source. We infer the reflective zones beneath the two mounds are basaltic intrusions that create hydrothermal circulation within the overlying sediments. Across the Nootka continental slope, gas hydrate‐related bottom‐simulating reflectors are widespread and occur at depths indicating heat flow values of 80–90 mW/m 2 ." @default.
- W3048348982 created "2020-08-13" @default.
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- W3048348982 date "2020-08-01" @default.
- W3048348982 modified "2023-09-26" @default.
- W3048348982 title "Focused Fluid Flow Along the Nootka Fault Zone and Continental Slope, Explorer‐Juan de Fuca Plate Boundary" @default.
- W3048348982 cites W1510763230 @default.
- W3048348982 cites W1579624063 @default.
- W3048348982 cites W1607885691 @default.
- W3048348982 cites W1612517152 @default.
- W3048348982 cites W1914098515 @default.
- W3048348982 cites W1960299961 @default.
- W3048348982 cites W1968834852 @default.
- W3048348982 cites W1973985470 @default.
- W3048348982 cites W1980945621 @default.
- W3048348982 cites W1987817036 @default.
- W3048348982 cites W1992460765 @default.
- W3048348982 cites W1992714577 @default.
- W3048348982 cites W1996525097 @default.
- W3048348982 cites W1997486601 @default.
- W3048348982 cites W2008680648 @default.
- W3048348982 cites W2009410127 @default.
- W3048348982 cites W2023362491 @default.
- W3048348982 cites W2025492889 @default.
- W3048348982 cites W2028402429 @default.
- W3048348982 cites W2035929843 @default.
- W3048348982 cites W2037318630 @default.
- W3048348982 cites W2042296290 @default.
- W3048348982 cites W2049710637 @default.
- W3048348982 cites W2052562768 @default.
- W3048348982 cites W2056479413 @default.
- W3048348982 cites W2063525007 @default.
- W3048348982 cites W2068482152 @default.
- W3048348982 cites W2075179699 @default.
- W3048348982 cites W2077995778 @default.
- W3048348982 cites W2079879613 @default.
- W3048348982 cites W2080657758 @default.
- W3048348982 cites W2085947043 @default.
- W3048348982 cites W2090520686 @default.
- W3048348982 cites W2097136530 @default.
- W3048348982 cites W2098938878 @default.
- W3048348982 cites W2106369651 @default.
- W3048348982 cites W2114299336 @default.
- W3048348982 cites W2118584810 @default.
- W3048348982 cites W2120882536 @default.
- W3048348982 cites W2124094833 @default.
- W3048348982 cites W2125664639 @default.
- W3048348982 cites W2125714483 @default.
- W3048348982 cites W2130107004 @default.
- W3048348982 cites W2130806056 @default.
- W3048348982 cites W2132713850 @default.
- W3048348982 cites W2133646821 @default.
- W3048348982 cites W2141388451 @default.
- W3048348982 cites W2142138633 @default.
- W3048348982 cites W2148773537 @default.
- W3048348982 cites W2151106706 @default.
- W3048348982 cites W2152508756 @default.
- W3048348982 cites W2157528639 @default.
- W3048348982 cites W2158651150 @default.
- W3048348982 cites W2160126448 @default.
- W3048348982 cites W2161277731 @default.
- W3048348982 cites W2161382005 @default.
- W3048348982 cites W2163475468 @default.
- W3048348982 cites W2171738179 @default.
- W3048348982 cites W2282673021 @default.
- W3048348982 cites W2288496799 @default.
- W3048348982 cites W2325510716 @default.
- W3048348982 cites W2496075903 @default.
- W3048348982 cites W2506393692 @default.
- W3048348982 cites W2594735715 @default.
- W3048348982 cites W2602332582 @default.
- W3048348982 cites W2805450163 @default.
- W3048348982 cites W2809801739 @default.
- W3048348982 cites W2889636964 @default.
- W3048348982 cites W2899534590 @default.
- W3048348982 cites W2901889349 @default.
- W3048348982 cites W2908792557 @default.
- W3048348982 cites W2910157849 @default.
- W3048348982 cites W2973786500 @default.
- W3048348982 cites W2977733879 @default.
- W3048348982 cites W2981381605 @default.
- W3048348982 cites W2981591362 @default.
- W3048348982 cites W2981795513 @default.
- W3048348982 cites W2981876872 @default.
- W3048348982 cites W2995474692 @default.
- W3048348982 cites W2997426638 @default.
- W3048348982 cites W4249912285 @default.
- W3048348982 doi "https://doi.org/10.1029/2020gc009095" @default.
- W3048348982 hasPublicationYear "2020" @default.
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